IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0205556
(2002-07-25)
|
우선권정보 |
EP-0202895 (2001-07-30) |
발명자
/ 주소 |
- Visman, Pieter
- Kamerbeek, Marc
- Aitink, Albert Jan
- Bosman, Fransciscus Jozef
- Van Der Meer, Mattheus Jacobus
|
출원인 / 주소 |
- Koninklijke Philips Electronics N.V.
|
인용정보 |
피인용 횟수 :
12 인용 특허 :
4 |
초록
▼
Shaving apparatus having at least one pivotable cutting unit (3) comprising an external cutting member (4) and an internal cutting member (6) which is drivable relative to said external cutting member, a drive mechanism (8) for driving said internal cutting member (6) into rotation, and a coupling m
Shaving apparatus having at least one pivotable cutting unit (3) comprising an external cutting member (4) and an internal cutting member (6) which is drivable relative to said external cutting member, a drive mechanism (8) for driving said internal cutting member (6) into rotation, and a coupling member (18) having a coupling head (19) and a coupling body (20), which coupling head can be coupled to a coupling element (16) of the internal cutting member (6) in a detachable manner, said coupling body (20) being coupled to said driving mechanism (8). The coupling head (19) can be inserted into a cavity (21) of the coupling head (19). For driving said internal cutting member into rotation, the coupling head (19) comprises curved surfaces (25) for cooperation with surfaces (28) of said cavity (21). To improve the drive system, the coupling head (19) and the cavity (21) of the coupling element (16) have an approximately triangular shape which is rotationally symmetrical through 120°, as seen in the direction of the axis of rotation (24) of the coupling head (19).
대표청구항
▼
1. A shaving apparatus provided with at least one pivotable cutting unit ( 3) comprising an external cutting member (4) and an internal cutting member (6) which can be driven in rotation with respect to the former (4), a drive mechanism (8) for driving the internal cutting member (6) into rotation,
1. A shaving apparatus provided with at least one pivotable cutting unit ( 3) comprising an external cutting member (4) and an internal cutting member (6) which can be driven in rotation with respect to the former (4), a drive mechanism (8) for driving the internal cutting member (6) into rotation, and a coupling member (18) comprising a coupling head (19) and a coupling body (20), which coupling head (19) can be detachably coupled to a coupling element (16) of the internal cutting member (6), said coupling body (20) being coupled to the drive mechanism (8),which coupling member has an axis of rotation (24), andwhich coupling head (19) is provided with curved drive surfaces (25) between which curved connecting surfaces (26) are situated,while, seen in a plane (P1) substantially transverse to the drive surface (25) and containing the axis of rotation (24), each drive surface (25) has a curvature with a first radius of curvature (R1) whose center (M1) lies substantially on the axis of rotation (24), and each connecting surface (26) has a curvature with a second radius of curvature (R2) whose center (M2) coincides with the center (M1) of the first radius of curvature (R1), said second radius of curvature (R2) being greater than said first radius of curvature (R1), andthe coupling element (16) of the internal cutting member (6) is provided with a cavity (21) in which the coupling head (19) can be accommodated and which is provided with drive surfaces (28) for cooperating with the curved drive surfaces (25) of the coupling head (19), characterized in thatboth the coupling head (19) and the cavity (21) of the coupling element (16) have an approximately triangular shape which is rotationally symmetrical through 120°, seen in a direction along the axis of rotation (24).2. A shaving apparatus as claimed in claim 1, characterized in that each curved drive surface (25) of the coupling head (19) has a slight curvature, seen in a plane (P2) perpendicular to the axis of rotation (24), with a great radius of curvature (R3).3. A shaving apparatus as claimed in claim 1, characterized in that the upper side of the coupling head (19) is provided with a spherical bearing surface (29) for cooperating with a bearing surface (30) situated in the center of the cavity (21) of the coupling element (16) of the internal cutting member (6), which spherical bearing surface (29) has a curvature with a radius of curvature (R4), whose center (M4) lies on the axis of rotation (24), which center (M4), seen in the direction of the axis of rotation (24), is at a greater distance from the spherical bearing surface (29) than is the center (M1, M2) of the curved drive surfaces (24).4. A shaving apparatus as claimed in claim 1, characterized in that the coupling element (16) is provided with sloping inlet surfaces (32) for coupling to the coupling member (18).5. A shaving apparatus as claimed in claim 1, characterized in that the coupling element (16) is provided with recesses (31) which directly adjoin the cavity (21).6. A shaving apparatus as claimed in claim 1, characterized in that the coupling member (18) is resiliently fastened to the drive shaft (22) of a motor (8), with resilience in the direction of the axis of rotation (24).7. A cutting unit ( 3) with an external cutting member (4) and an internal cutting member (6) which can be driven into rotation with respect to the former (4), comprising a coupling element (16) provided with a cavity (21) having a substantially triangular shape for use in the shaving apparatus as claimed inclaim 1.8. A cutting unit as claimed in claim 7, characterized in that the coupling element (16) is provided with recesses (31) which directly adjoin the cavity (21).
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